JP6667542B2 - 拡張可能な、調節可能な椎体間固定器具および方法 - Google Patents
拡張可能な、調節可能な椎体間固定器具および方法 Download PDFInfo
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- Health & Medical Sciences (AREA)
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- Oral & Maxillofacial Surgery (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Claims (22)
- 手術で使用する椎体間固定器具であって、
先縁、後縁、上位の骨接触表面、反対側の第1のプレート内表面、および第1のプレート長手方向軸を有する第1のプレートと、
先縁、後縁、下位の骨接触表面、反対側の第2のプレート内表面、および第2のプレート長手方向軸を有する第2のプレートであって、前記第1のプレートが前記第2のプレートの上に実質的に横たわり、前記第1のプレートが、前記第1のプレート長手方向軸および前記第2のプレート長手方向軸が器具の角度を形成するように、前記第2のプレートに対して位置付けられ、前記第1のプレートおよび前記第2のプレートの少なくとも一方が、前記第1のプレートと前記第2のプレートとの間に延伸し、且つ少なくとも1つのスロットを画定する少なくとも1つの長手方向側壁を有する、第2のプレートと、
先縁および後縁を有する第1の部材、ならびに先縁および後縁を有する第2の部材を備える挿入具であって、実質的に前記第1のプレートと前記第2のプレートとのその間に位置付けられた挿入具と
を備え、
前記第1の部材および前記第2の部材の両方が、前記第1のプレートの近くにまたはそれに接触する上位のプレート接触表面および前記第2のプレートの近くにまたはそれに接触する下位のプレート接触表面を含み、前記第1の部材および前記第2の部材は、物理的に分離され、独立的に動作し、且つ前記第1のプレートと前記第2のプレートとの間の距離および前記器具の角度の両方を選択的に変更することを可能にするにように構成され、 前記少なくとも1つのスロットが前記第1の部材または前記第2の部材のピンと係合する場合に、前記第1のプレートおよび前記第2のプレートに対する前記第1の部材および前記第2の部材の移動は、前記第1のプレートの前記先縁と前記第2のプレートの前記先縁との間の距離および/または前記第1のプレートの前記後縁と前記第2のプレートの前記後縁との間の距離と、前記器具の角度との両方を選択的に変更する、椎体間固定器具。 - 前記器具の角度は、前記第1のプレートと前記第2のプレートとが互いに実質的に平行であるように、実質的に0度であり、前記第1の部材は、前記第1の部材の一部分を前記第1のプレートおよび前記第2のプレートの少なくとも一方に結合するように構成された第1の保持具を備える、請求項1に記載の椎体間固定器具。
- 前記器具の角度は、約1度〜約45度の鋭角であり、前記少なくとも1つのスロットは、傾斜スロット壁を備える、請求項1に記載の椎体間固定器具。
- 前記器具の角度は、約5度〜約30度の鋭角である、請求項1に記載の椎体間固定器具。
- 前記器具の角度は、約10度〜約20度の鋭角である、請求項1に記載の椎体間固定器具。
- 前記第1のプレートは、前記第1のプレート内表面の一部分から延びる一対の長手方向側壁を備え、前記第2のプレートは、前記第2のプレート内表面の一部分から延びる一対の長手方向側壁を備え、前記一対の長手方向側壁のうちの一方は、他方の前記一対の長手方向側壁内に位置付けられる、請求項1に記載の椎体間固定器具。
- 前記第1のプレートの前記長手方向側壁は、第1の傾斜スロットおよび第2の傾斜スロットを画定し、各スロットは、先端および後端を有し、前記先端は、前記第1のプレートの前記先縁により近く位置付けられる、請求項6に記載の椎体間固定器具。
- 前記第1のスロットは、前記第1のプレートの前記長手方向軸に対して鋭角に位置付けられた第1のスロット軸に沿って画定され、前記第2のスロットは、前記第1のプレートの前記長手方向軸に対して鋭角に位置付けられた第2のスロット軸に沿って画定される、請求項7に記載の椎体間固定器具。
- 前記第1のスロット軸および前記第2のスロット軸は、互いに平行である、請求項8に記載の椎体間固定器具。
- 前記第1のスロット軸および前記第2のスロット軸は、前記第1のプレートの前記長手方向軸に対して傾斜する、請求項8に記載の椎体間固定器具。
- 前記第2のプレートの前記長手方向側壁は、第3の傾斜スロットおよび第4の傾斜スロットを画定し、各スロットは、先端および後端を有する、請求項7に記載の椎体間固定器具。
- 前記第3のスロットは、前記第2のプレートの前記長手方向軸に対して鋭角に位置付けられた第3のスロット軸に沿って画定され、前記第4のスロットは、前記第2のプレートの前記長手方向軸に対して鋭角に位置付けられた第4のスロット軸に沿って画定される、請求項11に記載の椎体間固定器具。
- 前記第3のスロット軸および前記第4のスロット軸は、互いに平行である、請求項12に記載の椎体間固定器具。
- 前記第3のスロット軸および前記第4のスロット軸は、前記第2のプレートの前記長手方向軸に対して傾斜する、請求項12に記載の椎体間固定器具。
- 前記第1の部材は、前記第2の部材から離間される、請求項1に記載の椎体間固定器具。
- 前記第1の部材の部分は、前記第1のプレートおよび前記第2のプレートの前記先縁の部分を選択的に離すことによって前記椎体間固定器具の部分を拡張するように、前記第1のプレートの前記先縁の部分、および前記第2のプレートの前記先縁の部分に作用するように位置付けられ構成される、請求項1に記載の椎体間固定器具。
- 前記第2の部材の部分は、前記第1のプレートおよび前記第2のプレートの前記後縁の部分を選択的に離すことによって前記椎体間固定器具の部分を拡張するように、前記第1のプレートの前記後縁の部分、および前記第2のプレートの前記後縁の部分に作用するように位置付けられ構成される、請求項16に記載の椎体間固定器具。
- 前記第1の部材の前記後縁は、ネジ軸と係合するように構成された第1の開口を画定し、前記挿入具の長手方向を中心とする回転方向である第1の方向への前記ネジ軸の回転は、前記第1の部材を近位に移動させ、前記第1の方向とは反対の第2の方向への前記ネジ軸の回転は、前記第1の部材を遠位に移動させる、請求項1に記載の椎体間固定器具。
- 前記第2の部材は、前記第2の部材を通って長手方向に延びる第2の開口を画定し、前記第2の開口は、第2のネジ軸と係合するように構成され、前記第1の方向への前記第2のネジ軸の回転は、前記第2の部材を近位に移動させ、前記第2の方向への前記第2のネジ軸の回転は、前記第2の部材を遠位に移動させる、請求項18に記載の椎体間固定器具。
- 前記第2のネジ軸の遠位端は器具駆動ドライバと係合して、前記器具駆動ドライバの回転が前記第2のネジ軸を回転させることができる、請求項19に記載の椎体間固定器具。
- 長手方向導管は、前記器具駆動ドライバの少なくとも一部分が、前記長手方向導管を通って挿入されることを可能とするように構成された前記第2のネジ軸を通って画定される、請求項20に記載の椎体間固定器具。
- 椎体間固定器具を製造する方法であって、
適切な高さを有する椎体間固定器具サイズを選択することであって、前記椎体間固定器具が、
先縁、後縁、上位の骨接触表面、反対側の第1のプレート内表面、および第1のプレート長手方向軸を有する第1のプレート、
先縁、後縁、下位の骨接触表面、反対側の第2のプレート内表面、および第2のプレート長手方向軸を有する第2のプレートであって、前記第1のプレートが前記第2のプレートの上に実質的に横たわり、前記第1のプレートが、前記第1のプレート長手方向軸および前記第2のプレート長手方向軸が器具の角度を形成するように、前記第2のプレートに対して位置付けられ、前記第1のプレートおよび前記第2のプレートの少なくとも一方が、前記第1のプレートと前記第2のプレートとの間に延伸し、且つ少なくとも1つのスロットを画定する少なくとも1つの長手方向側壁を有する、第2のプレート、ならびに
先縁および後縁を有する第1の部材、ならびに先縁および後縁を有する第2の部材を備える挿入具であって、実質的に前記第1のプレートと前記第2のプレートとのその間に位置付けられた挿入具
を備え、
前記第1の部材および前記第2の部材の両方が、上位の接触表面および下位の接触表面を含み、
前記第1の部材および前記第2の部材は、物理的に分離され、独立的に動作し、且つ前記第1のプレートの前記先縁と前記第2のプレートの前記先縁との間の距離および/または前記第1のプレートの前記後縁と前記第2のプレートの前記後縁との間の距離と、前記器具の角度との両方を選択的に変更することを可能にするにように構成される、
選択することと、
前記第1のプレートおよび前記第2のプレートに対する前記挿入具の長手方向の移動によって前記椎体間固定器具を第1の非拡張位置から第2の拡張位置に拡張することと、
前記少なくとも1つのスロットが前記第1の部材または前記第2の部材のピンと係合する場合に、前記第1のプレートの前記先縁と前記第2のプレートの前記先縁との間の距離および/または前記第1のプレートの前記後縁と前記第2のプレートの前記後縁との間の距離と、前記第2のプレートに対する前記第1のプレートの角度との両方を調節することと
を含む方法。
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